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Finding the Fourth Proportional to 798.90, 1,101.32 and 565.62

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Solution

The fourth proportional to 798.90, 1,101.32 and 565.62 is: 779.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    798.90 : 1,101.32 = 565.62 : x
  2. Step 2: Convert to fraction form
    798.90/1,101.32 = 565.62/x
  3. Step 3: Cross multiply
    798.90x = 1,101.32 × 565.62
  4. Step 4: Simplify right side
    798.90x = 622,928.62
  5. Step 5: Solve for x
    x = 622,928.62/798.90
  6. Step 6: Final answer
    x = 779.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.